Answer:
4.61 x 10^23
Explanation: Convert 213g of PbCl2 to mol, which is 0.7658950184462004, multiply 0.765 with 6.022 x 10^23.
Answer:
If there are 2 chlorine atoms per molecule then I think that the answer is 26 chlorine atoms.
First convert to moles:
0.5113 g / 17 g/mol = 0.0301 mol
Now create a ratio based on the reaction provided to solve for the unknown:
4 NH3 / -905.4 kJ = 0.0301 mol NH3 / x kJ
x = -6.808 kJ
The group 7A elements are called Halogens.
Please mark as brainliest if this helped! :)
Stainless steel is an alloy of iron, chromium and nickel.
